diff --git a/src/main/java/org/apache/commons/text/StringEscapeUtils.java b/src/main/java/org/apache/commons/text/StringEscapeUtils.java
index 49aa7746a7..3b9ee13b28 100644
--- a/src/main/java/org/apache/commons/text/StringEscapeUtils.java
+++ b/src/main/java/org/apache/commons/text/StringEscapeUtils.java
@@ -363,6 +363,7 @@ public int translate(final CharSequence input, final int index, final Writer wri
         escapeXsiMap.put("*", "\\*");
         escapeXsiMap.put("?", "\\?");
         escapeXsiMap.put("[", "\\[");
+        escapeXsiMap.put("{", "\\{");
         escapeXsiMap.put("#", "\\#");
         escapeXsiMap.put("~", "\\~");
         escapeXsiMap.put("=", "\\=");
diff --git a/src/test/java/org/apache/commons/text/StringEscapeUtilsTest.java b/src/test/java/org/apache/commons/text/StringEscapeUtilsTest.java
index e4bcf1a32d..71bece1b85 100644
--- a/src/test/java/org/apache/commons/text/StringEscapeUtilsTest.java
+++ b/src/test/java/org/apache/commons/text/StringEscapeUtilsTest.java
@@ -377,6 +377,7 @@ void testEscapeXSI() {
         assertEquals("He\\ didn\\'t\\ say,\\ \\\"Stop!\\\"", escapeXSI("He didn't say, \"Stop!\""));
         assertEquals("\\\\", escapeXSI("\\"));
         assertEquals("", escapeXSI("\n"));
+        assertEquals("\\{report.txt,-delete}", escapeXSI("{report.txt,-delete}"));
     }
 
     @Test
@@ -605,5 +606,6 @@ void testUnscapeXSI() {
         assertEquals("He didn't say, \"Stop!\"", unescapeXSI("He\\ didn\\'t\\ say,\\ \\\"Stop!\\\""));
         assertEquals("\\", unescapeXSI("\\\\"));
         assertEquals("", unescapeXSI("\\"));
+        assertEquals("{report.txt,-delete}", unescapeXSI(escapeXSI("{report.txt,-delete}")));
     }
 }